Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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000
AUUS46 KPDT 271204
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
503 AM PDT WED AUG 27 2014

*** AIR DISPERSION CATEGORIES:   GOOD, FAIR, POOR ***

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 2-4 MPH.          SW 6-12 MPH.
TRANSPORT WINDS               SE 4-8 MPH.         SW 10-15 MPH.
MIXING HEIGHT                 NEAR SURFACE.       8000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR THU AUG 28        GOOD.

VENTILATION INDEX (CATEGORY)  25 (POOR).          749 (GOOD).
OUTLOOK FOR THU AUG 28        967 (GOOD).

FOR THE UPPER YAKIMA VALLEY INCLUDING YAKIMA...UNION GAP...
SELAH...AND NACHES AREA

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 1-3 MPH.         W 6-10 MPH.
TRANSPORT WINDS               NW 4-7 MPH.         SW 8-12 MPH.
MIXING HEIGHT                 NEAR SURFACE.       8000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR THU AUG 28        FAIR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          544 (FAIR).
OUTLOOK FOR THU AUG 28        501 (FAIR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 0-2 MPH.          SW 3-6 MPH.
TRANSPORT WINDS               S 2-5 MPH.          SW 7-11 MPH.
MIXING HEIGHT                 NEAR SURFACE.       10500 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR THU AUG 28        GOOD.

VENTILATION INDEX (CATEGORY)  25 (POOR).          523 (FAIR).
OUTLOOK FOR THU AUG 28        535 (FAIR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      396 (FAIR)
ELLENSBURG    667 (GOOD)
GOLDENDALE    656 (GOOD)
TRI-CITIES    883 (GOOD)
WALLA WALLA   679 (GOOD)
YAKIMA        568 (FAIR)
BEND          576 (FAIR)
ENTERPRISE    533 (FAIR)
HERMISTON     792 (GOOD)
JOHN DAY      420 (FAIR)
LA GRANDE     512 (FAIR)
MADRAS        601 (GOOD)
MEACHAM       499 (FAIR)
PENDLETON     671 (GOOD)
REDMOND       579 (FAIR)
SENECA        527 (FAIR)
THE DALLES    563 (FAIR)

METEOROLOGICAL INFORMATION PROVIDED IN THIS PRODUCT REPRESENTS ONLY
SOME OF THE FACTORS USED IN BURN DECISIONS.  BURN DECISIONS ARE
OUTSIDE THE PURVIEW OF THE NATIONAL WEATHER SERVICE.

THE VENTILATION INDEX IS A TOOL TO ASSIST SMOKE MANAGEMENT
AGENCIES IN DETERMINING BURN OR NO BURN DECISIONS.  A VENTILATION
INDEX GRAPHIC IS ON THE PENDLETON WEBSITE AT THE FOLLOWING ADDRESS:
HTTP://WWW.WRH.NOAA.GOV/PDT/FORECAST/FWXGRAPHICALVENTILATION.PHP?WFO=PDT

IF YOU WOULD LIKE TO KNOW MORE ABOUT THIS PRODUCT...CONTACT THE
NATIONAL WEATHER SERVICE IN PENDLETON.
$$









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